Students will determine the relative stiffness of two aluminum beam test specimens of equal cross sectional area but different cross-sectional shape and see how they conform to theory.
学生要确定两个横截面面积相同而形状不同的铝梁实验样本的相对刚度，并研究结果如何与理论一致。
2
The experimental results show that the axial stiffness of unidirectionally wound tubes is a little higher than that of cross wound tubes.
实验结果表明，无纬结构管件比有纬结构管件的轴向刚度略高些。
3
The stiffness matrix, equivalent nodal load and consistent mass matrix are derived for the beam element with variable cross-section.